HTML表格操作与样式-优快云博客

本文链接：https://blog.youkuaiyun.com/koukou0419/article/details/80692020

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
	    *{
	    	margin:0px;
	    	padding:0;
	    }
		.active{
			border:1px solid red;
			width:100px;
			height:50px;		
		}
		
		div{
			width:900px;
			height:350px;
			margin-top: 100px;
			margin-left:200px;
		}
		table,td{
			border:1px solid black;
		}
		td{
			width:200px;
			height:30px;
		}
		table{
			border-collapse: collapse;
		}
	</style>
		
</head>
<body>
	
	<div>
		<table id='sheet' >
			<thead>
				<td>ID</td>
				<td>姓名</td>
				<td>年龄</td>
			</thead>
			<tbody>
				<tr>
					<td>1</td>
					<td>张三</td>
					<td>21</td>
				</tr>
				<tr>
					<td>2</td>
					<td>李四</td>
					<td>22</td>
				</tr>
				<tr>
					<td>3</td>
					<td>王尔</td>
					<td>34</td>
				</tr>
				<tr>
					<td>4</td>
					<td>ddd尔</td>
					<td>34</td>
				</tr>
			</tbody>
		</table>


	</div>
	
	<script>
		window.onload=function(){
			//隔行变色
			//容易忘掉tBodies


			var tab=document.getElementById('sheet');
			var oldColor;
			for(var i=0;i<tab.tBodies[0].rows.length;i++){


				if(i%2==0){
					tab.tBodies[0].rows[i].style.background="yellow";
				}else{
					tab.tBodies[0].rows[i].style.background="#fff";
				}


				//鼠标移入
				tab.tBodies[0].rows[i].onmouseover=function(){
					oldColor=this.style.background;
					//记录当前行的背景色，易错把颜色在外部记录
					this.style.background="green";
					//易错 一定写this.style.background当前点击的行用this表示
				}
				//鼠标移出返回原来的颜色
				tab.tBodies[0].rows[i].onmouseout=function(){
					    this.style.background=oldColor;
					}


			}


		}
	    
	</script>
		
		
</body>
</html>

隔行变色，鼠标移入变色